Answer:
Chopin's first étude focuses on a rippling chord progression. The piece is composed in the same ternary (or A-B-A) form as most of his Op. 10 études, introducing two ideas before coming back to repeat the first.
 
        
             
        
        
        
The first one can be seen either way. For me, I saw a vase first. In all of the pictures, the black drawing is considered the positive space and the white background behind it is considered to be the negative space. If you look at the vase picture again and imagine the background to be the black portion, you see two faces.
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Feelings that are over looked is the feeling of suspicion
        
             
        
        
        
Piano sonata forms consist of three main parts: exposition, development and recapitulation. So the answer is C) Oratorio 
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